package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

/**
 * 完成用户登录系统
 */
public class LoginDemo {
    public static void main(String[] args) {

        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(),"欢迎登录","登录");
        System.out.println(userInfo);
        /*System.out.println("欢迎登录");
        Scanner scan = new Scanner(System.in);
        System.out.println("请输入用户名：");
        String username = scan.next();
        System.out.println("请输入密码：");
        String password = scan.next();*/
        try (
            Connection connection = DBUtil.getConnection();){
            Statement statement = connection.createStatement();
            String sql = "SELECT id,username,password,nickname,age " +
                    "FROM userinfo " +
                    "WHERE username = '"+userInfo.getUsername()+"'AND password = '"+userInfo.getPassword()+"'";
            ResultSet rs = statement.executeQuery(sql);
            if (rs.next()){
                System.out.println("登录成功");
            }else {
                System.out.println("用户名或密码错误");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
